Roof structure



vL. BAUMGARTL. 5 v ROOF STRUCTURE'. APPucATlloN FILED MAR.21. 1921.

Patented May 3,0, 1922.

. To all ,whom z'zimag/ Concern.' l

j veolvrinirsr,A oF'cHIeAeo, ILLINOIS, AeoaronafrronorLLINoIs,

Y RooFsTaUcrtra-e: Y'

z yAppmfmon.firearm/ramal21, 192.1. fseriaifim;454,113,-y

Be. 1t .',lr'nown that I,- LnRoYi, BnUrvreARTii, a `citizernof the United l' States, residing'at Chicago, `in' -tlie `lcounty of @ook-land State.- of Illinois, have -inventedaa'tnew and-y useful Improvement' in Roof "Structures, `-of which` the [following is a specification MyV invention relates more lpartieularlyto roof? structures-v formedl off slabs: of,V cement"L on 4the like material, Ordinarily assembled: t0;Y

, ormtheroo, inoverlappedfeourses orlrows,`

the slabs ofy adjacent rows-beingarr'anged instaggered relation; and more especially 'to' structures wherein the .jointsf between edgeato-edge disposed slabsaresformed by.

applying any --suitable llingmaterial-to the channels provided in: the upper surface of the I root. structure at thej `oints; between f adjacent slabs primaryobjeet being.y toprovide improvements. 'iny strnetilres.l Oifvthef character just referred to, ,to theend that, the joints' produced `may' be, rendered more per-feet.

,Eignref 1] isa plan- View of Aaportion or" a roof, structure constructed'inaccordance;

With my `:inventiom-the j ointrform'ing cement at certain of the joints the-reofib'eing broken away. Figure 2 .isape-rspective .View of one A 'section' takenat, the line: 3 on Figf 1 and Viewed inthevdirectionsof the arrow.4 Fig,-

urea is a section taken atl theline. l onliligr' 1an'd vievvedin the direction of the arrow. Figu-reis. a View like Fig. 3 of asl1ght `modifcation of ,thedisposition of the;y jointforming lilling vvmaterial; fand Figiire 6,1 a View lof ,thel struotureshown 1n Fig-.55 showringthe filling; materialas: coveredlwith a skin of such character as tofformpaj sheathing for the underlyingbody` of joint-forum ing` material. y l

, Inl accordancefivith the. illustrated, preferrecLLembod-iment of my invention, the slab is provided of the form shown' inthe drawj ings, Fig. 2 showing one ofgthe similar `slabs in perspective.' The slabs, represented .i atfT,

are. provided `of rectangular Vform and are preferably,` ofy the .thin type l with1 reenforcef,y

ment l(not shown) {disposedyin the tensile zone of thewslabs.; The slabs are provided- Referring. tothe accompanying drawings opposite edges thereof, with series offupvvardly-rextending ribs :Which y extenell-'prefer` -l ablyftheifull length ofi-the slabs; l' Eachy series 'of' ribs referredto"iswshovvn as com# prising two ribs 8 'and' 9, affordingtherebe-y tween l the channelsf- `10 extending the`A 'full' lengthiof' the slabs, the `ribs S1-'being setback from'` the adjacent {edges-.ofthe slabs, as shown, `to present the lengthwiseiextending, recesses lll intheupper'surfaeei'otthe' slab at' Opposite edges thereof. 'The "s'lab .isfg 4 l form afplurality of courses',-vvithfthe upperfr edges of the slabs of each course, exceptfthe uppermost one, overlapped by thev loW'er' 'specification 'f Letfeeitni, BatentedMayeggieaa "sofv In the lassembling` of theslabs-to ormw--a edges :ofthFf/VCourses immediately above-them, v the slabsof adj acent courses being'arrangedf y in staggeredv relation to `canse :the jointsbef `tween the slabsarranged side byside, to'exftendinto the recesses lgoff'the slabs; off-thee.l

course nextljabovethenL-.asfshojvmg` Infthe arranging' ofthe slabs inedge to-ed'gerelay j' tion,v as statedland shoivnj, the; opposingfre1. eessesfllfaiford at eaohjointfa groove lf sak extending lengthwise of 'theislabs, the adja-v cent, opposed edgesof the slabs ,.beingfprefer# ably spaced-,a slightfdistance apski'rtas@shown l` o'tFigs, 1,3 andre. In*` accjordaneea` Withfthe; showing in- Figsg 1, r and EL, .any;Suitablel plastic "cementitiousmaterial, suoh` as thaty, commonly employedto 4fill thejoints Abetween 1f roofv slabs, is appliedQto theyupper Tvsurfaces of the slabs toA extend, preferably, the full-` length thereof at the joints, the, appliedmaterial referred to, andV representedat 15,-be-

ingyproyided o'flsfuehthickness as to extend into theehannels 14,',ing-to the channels l10,: f

across ythe topszofthe ribsv S and 9and at I l lnoo least part way downfintoA the: spaces',bev tween a adj acentv slabs, the body.l of. 'material 1,5 being so disposed, that jtiti.,`\vill present a;

cross-sectional shape as shown in Fig. Before applying the uppercourses of slabs,

ribbons 16 of the cement-itious material re.-r

ferred to are applied acioss the upper surfaces of the slabs adjacent their upper edges to extend at iightangles to the length of the slabs and in 'such position that the lower Y edgesof the slabs next above `them will bear down against these kribbons of cementitious material. The, masses 15 of cement, esv pecially at the upper ends of the joints over which" they extend, are of suflicient volume that when the slabs next abovethem are applied to'position thereon, in staggering relation thereto, the walls of the shallow yrecesses '13 will` cause these masses, where engaged bythe row of slabs next above them,

lto be mashed or squeezed down substantially to the crosssecltional shape shown in Fig. l, thereby causing the cementitious material to completely lill the spaces presented between the slabs vat their recessed portions 13 and the ribbed portions of the slabsiminediately beneath them. l

In `the structureshown in Fig. 5, which illustrates a modiiieation of the' invention,

the mass` of material 15 is shown as built ,.sup slightly higher atthe joint between-the slabs and extends flush with the outer edgek represented at 17, of the ribsQ. In the structure shownin Figo the body 15 of cementitious materialis disposed as, shown in Fig. 5, but instead of being exposed :to the weather, is covered by a sheathing, represented at 18, of any suitable material which tends to protect the mass 15 against the deleterious action of the ele- 1 ments.

. VIt will be noted that in all of the structures -shown a body of the joint-forming material, of relatively large cross-section is provided at the joint between the slabs arl'fvranged in edge to edge relation, and at 4both sides of the body so formed, fairlythick bodies of the material are afforded by reason of thepro'visionof the channels 10 into which the material extendsI and thus there is little, if any, danger of the materialforming the oint drawing away froml contact with the slabs, as for example in the drying out ofV theliilling material,'and even if the edge portions of the body ofiilling material draw 'a'.wayfrom the slabs sufficiently to permit' waterto enter between it` and the slabs, the water could not pass beyond the channels"10,and .thus the jointsvwould be maintained water-tight. n

joints between the' slabs. Y f vIn using the expressionv y y foregoing description and the following It will also be noted that the ribs 9 serve` t'o dam 'the water running down the slabs and'to a' great degree divert it vfrom the slabs in the claims, I wish 'to be understood yas intendingit to express any 'formof body, such as,

for example, so-called flat slabs, or tile, of

such character that a roof structure may be l vformed therefrom.

While I have illustrated aparticula'r construction embodying my invention, I do not wish `to be understood as intendingto limitit thereto, as' the same may be variously modified and altered withoutdeparting from the spirit of my invention.

`.,.VVhat Iv claim as new, and desire to secure by Letters Patent, is: ,f

1. VIn combination, slabs arranged'side by sidexinedgewise opposed relation, said slabs presenting an upwardly opening groove at their opposed edges for receiving material to fill the joint between the slabs, the upper surface of each slab having an upwardly extending rib extending lengthwisevthereof andv located between said grooves andthe main body portion` of the slab, lthe upper surfaces of saidfslabs also containing channels extending alongside said ribs,fand plastie, cementitious, filling materialy extending into saidgroove and into said channels and y forming an exposed filler rendering water-Vv tight the joint between said slabs. l

2. In combination, slabs arranged side by side in edgewise opposed relation, each of said slabs having the upper portion of an edge thereof set back from the lower por-l tion thereof to form and upwardly opening groove at the opposite edges'of'the slabs, each of said slabs presenting an upwardly extending rib j extending lengthwise thereof and located between said set-back portion of the slab, each of said slabs containinga channel in its upper surface extending alongside said rib, and plastic, cementitious, filling material filling said groove and extending into said channels and forming' an exposed iillery rendering water-tight the Vjoint between saidslabs.

3. vIn combination, slabs arranged side by side in edgewisey opposedrelation,eachrof said slabs having the upper, portion of an*A 4L. Iii combination, slabsv arranged side by side in edgewise opposed relation, said slabs presenting a groove at their opposed edges' i and channels in their upper' surfaces located at opposite sides of said grooves and adjacent thereto, respectively, plastic filling material lling said groove and channels recess at which it overlaps one end of the and extendin above the upper surface of said groove and channels and in the assemthe slab, and orming an exposed filler renbling of said slabs, squeezes the filling intoI l0 dering water-tight the joint between said close engagement with the under side of said 5 slabs7 and a third slab, overlapping said recess.

irst-referred-to slabs, and containing in its v under side at one end, a relatively shallow LEROY BAUMGlARTL. 

